I think I'll go for a student in the venus dorm and an autoshop teacher, can't resist the thought of dem overalls.

I think the student might be a bit shy but with a huge cock and generous assets (sorr of Hinata (Naruto) style) and a rather confident and bashful autoshop mechanic and teacher who doesn't really care how much people masturbate and will often even encourage them or take part.

Time to sort out the details :3

Oh god I'm really tempted to make one of them have 8 breasts, imagine the titfucks @-@